package com.itheima.reggie.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

@Slf4j
@Configuration
@EnableSwagger2
@EnableKnife4j
public class WebMvcConfig extends WebMvcConfigurationSupport {
//设置静态资源映射

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {

        log.info( "开始静态资源映射" );
        registry.addResourceHandler( "/backend/**").addResourceLocations( "classpath:/backend/");
        registry.addResourceHandler( "/front/**").addResourceLocations( "classpath:/front/");
        registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");

    }

    /**
     * 扩展mvc框架的消息转换器
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
    }



    @Bean
    public Docket createRestApi(){
        //文档类型
        return new Docket( DocumentationType.SWAGGER_2 )
                .apiInfo( apiInfo() )
                .select()
                .apis( RequestHandlerSelectors.basePackage( "com.itheima.reggie.controller" ) )
                .paths( PathSelectors.any() )
                .build();

    }

    private ApiInfo apiInfo() {

        return new ApiInfoBuilder()
                .title( "瑞吉外卖" )
                .version( "1.0" )
                .description( "瑞吉外卖接口文档" )
                .build();

    }
}
